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Case Count Maps

This investigation is closed.Listeria monocytogenes infection (listeriosis) is an important cause of illness in the United States. More information about listeriosis, and steps people can take to reduce their risk of infection, can be found on the CDC Listeria Web Page.

Case Count Map

Persons infected with the outbreak-associated strain of Listeria monocytogenes, by state*

*n=8 for whom information was reported as of February 21, 2014

A total of eight persons infected with the outbreak strain of Listeria monocytogenes were reported from two states. The number of ill persons identified in each state was as follows: Maryland (7) and California (1).